<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    #grid {
      display: grid;
      grid-template-areas:
        "header header  header  header"
        "left   content content right"
        "footer footer  footer  footer";
      background-color: burlywood;
      height: 300px;
    }
  </style>
</head>
<body>
  <div id="grid"></div>
</body>
</html>